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| Mirrors > Home > ILE Home > Th. List > mullid | Unicode version | ||
| Description: Identity law for multiplication. Note: see mulrid 8323 for commuted version. (Contributed by NM, 8-Oct-1999.) |
| Ref | Expression |
|---|---|
| mullid |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 8272 |
. . 3
| |
| 2 | mulcom 8308 |
. . 3
| |
| 3 | 1, 2 | mpan 428 |
. 2
|
| 4 | mulrid 8323 |
. 2
| |
| 5 | 3, 4 | eqtrd 2271 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 ax-resscn 8271 ax-1cn 8272 ax-icn 8274 ax-addcl 8275 ax-mulcl 8277 ax-mulcom 8280 ax-mulass 8282 ax-distr 8283 ax-1rid 8286 ax-cnre 8290 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-iota 5337 df-fv 5385 df-ov 6088 |
| This theorem is used by: mullidi 8329 mullidd 8344 muladd11 8459 1p1times 8460 mulm1 8727 div1 9033 recdivap 9048 divdivap2 9054 conjmulap 9059 expp1 10983 recan 11875 arisum 12265 geo2sum 12281 prodrbdclem 12338 prodmodclem2a 12343 demoivreALT 12541 gcdadd 12762 gcdid 12763 cncrng 14906 cnfld1 14909 |
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